Home / 38,022.72-52,470-21,255.36

Finding the Fourth Proportional to 38,022.72, 52,470 and 21,255.36

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Solution

The fourth proportional to 38,022.72, 52,470 and 21,255.36 is: 29,331.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,022.72 : 52,470 = 21,255.36 : x
  2. Step 2: Convert to fraction form
    38,022.72/52,470 = 21,255.36/x
  3. Step 3: Cross multiply
    38,022.72x = 52,470 × 21,255.36
  4. Step 4: Simplify right side
    38,022.72x = 1,115,268,739.20
  5. Step 5: Solve for x
    x = 1,115,268,739.20/38,022.72
  6. Step 6: Final answer
    x = 29,331.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.